LM2591HV

www.ti.com

SNVS074D – MAY 2001 – REVISED APRIL 2013

ELECTRICAL CHARACTERISTICS LM2591HV-5.0

Temperature Range.

Symbol

Parameter

Conditions

LM2591HV-5.0

Units

(Limits)

SYSTEM PARAMETERS Test Circuit Test Circuit and Layout Guidelines(3)

Output Voltage

7V

5

V

4.800/4.750

V(min)

5.200/5.250

V(max)

η

Efficiency

82

%

(1)

Typical numbers are at 25°C and represent the most likely norm.

(2)

All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits

are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control

(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(3)

External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.

When the LM2591HV is used as shown in Test Circuit and Layout Guidelines test circuit, system performance will be as shown in

Electrical Characteristics.

ELECTRICAL CHARACTERISTICS LM2591HV-ADJ

Temperature Range.

Symbol

Parameter

Conditions

LM2591HV-ADJ

Units

(Limits)

SYSTEM PARAMETERS Test Circuit Test Circuit and Layout Guidelines(3)

Feedback Voltage

4.5V

1.230

V

1.193/1.180

V(min)

Layout Guidelines.

1.267/1.280

V(max)

η

Efficiency

76

%

(1)

Typical numbers are at 25°C and represent the most likely norm.

(2)

All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits

are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control

(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(3)

External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.

When the LM2591HV is used as shown in Test Circuit and Layout Guidelines test circuit, system performance will be as shown in

Electrical Characteristics.

ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS

Symbol

Parameter

Conditions

LM2591HV-XX

Units

(Limits)

DEVICE PARAMETERS

Feedback Bias Current

10

nA

50/100

nA (max)

Oscillator Frequency

150

kHz

127/110

kHz(min)

173/173

kHz(max)

Saturation Voltage

(4) (5)

0.95

V

1.2/1.3

V(max)

(1)

Typical numbers are at 25°C and represent the most likely norm.

(2)

All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits

are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control

(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(3)

The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the

severity of current overload.

(4)

No diode, inductor or capacitor connected to output pin.

(5)

Feedback pin removed from output and connected to 0V to force the output transistor switch ON.

Copyright © 2001–2013, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Links: LM2591HV